392 lines
15 KiB
JavaScript
392 lines
15 KiB
JavaScript
// change_to: "on" or "off"
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EditArea.prototype.change_highlight= function(change_to){
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if(this.settings["syntax"].length==0 && change_to==false){
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this.switchClassSticky(_$("highlight"), 'editAreaButtonDisabled', true);
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this.switchClassSticky(_$("reset_highlight"), 'editAreaButtonDisabled', true);
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return false;
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}
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if(this.do_highlight==change_to)
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return false;
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this.getIESelection();
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var pos_start= this.textarea.selectionStart;
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var pos_end= this.textarea.selectionEnd;
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if(this.do_highlight===true || change_to==false)
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this.disable_highlight();
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else
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this.enable_highlight();
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this.textarea.focus();
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this.textarea.selectionStart = pos_start;
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this.textarea.selectionEnd = pos_end;
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this.setIESelection();
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};
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EditArea.prototype.disable_highlight= function(displayOnly){
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var t= this, a=t.textarea, new_Obj, old_class, new_class;
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t.selection_field.innerHTML="";
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t.selection_field_text.innerHTML="";
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t.content_highlight.style.visibility="hidden";
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// replacing the node is far more faster than deleting it's content in firefox
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new_Obj= t.content_highlight.cloneNode(false);
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new_Obj.innerHTML= "";
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t.content_highlight.parentNode.insertBefore(new_Obj, t.content_highlight);
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t.content_highlight.parentNode.removeChild(t.content_highlight);
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t.content_highlight= new_Obj;
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old_class= parent.getAttribute( a,"class" );
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if(old_class){
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new_class= old_class.replace( "hidden","" );
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parent.setAttribute( a, "class", new_class );
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}
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a.style.backgroundColor="transparent"; // needed in order to see the bracket finders
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//var icon= document.getElementById("highlight");
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//setAttribute(icon, "class", getAttribute(icon, "class").replace(/ selected/g, "") );
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//t.restoreClass(icon);
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//t.switchClass(icon,'editAreaButtonNormal');
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t.switchClassSticky(_$("highlight"), 'editAreaButtonNormal', true);
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t.switchClassSticky(_$("reset_highlight"), 'editAreaButtonDisabled', true);
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t.do_highlight=false;
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t.switchClassSticky(_$("change_smooth_selection"), 'editAreaButtonSelected', true);
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if(typeof(t.smooth_selection_before_highlight)!="undefined" && t.smooth_selection_before_highlight===false){
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t.change_smooth_selection_mode(false);
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}
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// this.textarea.style.backgroundColor="#FFFFFF";
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};
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EditArea.prototype.enable_highlight= function(){
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var t=this, a=t.textarea, new_class;
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t.show_waiting_screen();
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t.content_highlight.style.visibility="visible";
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new_class =parent.getAttribute(a,"class")+" hidden";
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parent.setAttribute( a, "class", new_class );
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// IE can't manage mouse click outside text range without this
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if( t.isIE )
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a.style.backgroundColor="#FFFFFF";
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t.switchClassSticky(_$("highlight"), 'editAreaButtonSelected', false);
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t.switchClassSticky(_$("reset_highlight"), 'editAreaButtonNormal', false);
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t.smooth_selection_before_highlight=t.smooth_selection;
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if(!t.smooth_selection)
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t.change_smooth_selection_mode(true);
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t.switchClassSticky(_$("change_smooth_selection"), 'editAreaButtonDisabled', true);
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t.do_highlight=true;
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t.resync_highlight();
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t.hide_waiting_screen();
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};
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/**
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* Ask to update highlighted text
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* @param Array infos - Array of datas returned by EditArea.get_selection_infos()
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*/
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EditArea.prototype.maj_highlight= function(infos){
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// for speed mesure
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var debug_opti="",tps_start= new Date().getTime(), tps_middle_opti=new Date().getTime();
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var t=this, hightlighted_text, updated_highlight;
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var textToHighlight=infos["full_text"], doSyntaxOpti = false, doHtmlOpti = false, stay_begin="", stay_end="", trace_new , trace_last;
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if(t.last_text_to_highlight==infos["full_text"] && t.resync_highlight!==true)
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return;
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// OPTIMISATION: will search to update only changed lines
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if(t.reload_highlight===true){
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t.reload_highlight=false;
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}else if(textToHighlight.length==0){
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textToHighlight="\n ";
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}else{
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// get text change datas
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changes = t.checkTextEvolution(t.last_text_to_highlight,textToHighlight);
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// check if it can only reparse the changed text
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trace_new = t.get_syntax_trace(changes.newTextLine).replace(/\r/g, '');
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trace_last = t.get_syntax_trace(changes.lastTextLine).replace(/\r/g, '');
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doSyntaxOpti = ( trace_new == trace_last );
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// check if the difference comes only from a new line created
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// => we have to remember that the editor can automaticaly add tabulation or space after the new line)
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if( !doSyntaxOpti && trace_new == "\n"+trace_last && /^[ \t\s]*\n[ \t\s]*$/.test( changes.newText.replace(/\r/g, '') ) && changes.lastText =="" )
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{
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doSyntaxOpti = true;
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}
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// we do the syntax optimisation
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if( doSyntaxOpti ){
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tps_middle_opti=new Date().getTime();
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stay_begin= t.last_hightlighted_text.split("\n").slice(0, changes.lineStart).join("\n");
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if(changes.lineStart>0)
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stay_begin+= "\n";
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stay_end= t.last_hightlighted_text.split("\n").slice(changes.lineLastEnd+1).join("\n");
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if(stay_end.length>0)
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stay_end= "\n"+stay_end;
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// Final check to see that we're not in the middle of span tags
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if( stay_begin.split('<span').length != stay_begin.split('</span').length
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|| stay_end.split('<span').length != stay_end.split('</span').length )
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{
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doSyntaxOpti = false;
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stay_end = '';
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stay_begin = '';
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}
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else
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{
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if(stay_begin.length==0 && changes.posLastEnd==-1)
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changes.newTextLine+="\n";
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textToHighlight=changes.newTextLine;
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}
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}
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if(t.settings["debug"]){
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var ch =changes;
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debug_opti= ( doSyntaxOpti?"Optimisation": "No optimisation" )
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+" start: "+ch.posStart +"("+ch.lineStart+")"
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+" end_new: "+ ch.posNewEnd+"("+ch.lineNewEnd+")"
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+" end_last: "+ ch.posLastEnd+"("+ch.lineLastEnd+")"
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+"\nchanged_text: "+ch.newText+" => trace: "+trace_new
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+"\nchanged_last_text: "+ch.lastText+" => trace: "+trace_last
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//debug_opti+= "\nchanged: "+ infos["full_text"].substring(ch.posStart, ch.posNewEnd);
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+ "\nchanged_line: "+ch.newTextLine
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+ "\nlast_changed_line: "+ch.lastTextLine
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+"\nstay_begin: "+ stay_begin.slice(-100)
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+"\nstay_end: "+ stay_end.substr( 0, 100 );
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//debug_opti="start: "+stay_begin_len+ "("+nb_line_start_unchanged+") end: "+ (stay_end_len)+ "("+(splited.length-nb_line_end_unchanged)+") ";
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//debug_opti+="changed: "+ textToHighlight.substring(stay_begin_len, textToHighlight.length-stay_end_len)+" \n";
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//debug_opti+="changed: "+ stay_begin.substr(stay_begin.length-200)+ "----------"+ textToHighlight+"------------------"+ stay_end.substr(0,200) +"\n";
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+"\n";
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}
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// END OPTIMISATION
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}
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tps_end_opti = new Date().getTime();
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// apply highlight
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updated_highlight = t.colorize_text(textToHighlight);
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tpsAfterReg = new Date().getTime();
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/***
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* see if we can optimize for updating only the required part of the HTML code
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*
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* The goal here will be to find the text node concerned by the modification and to update it
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*/
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//-------------------------------------------
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//
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if( doSyntaxOpti )
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{
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try
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{
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var replacedBloc, i, nbStart = '', nbEnd = '', newHtml, lengthOld, lengthNew;
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replacedBloc = t.last_hightlighted_text.substring( stay_begin.length, t.last_hightlighted_text.length - stay_end.length );
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lengthOld = replacedBloc.length;
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lengthNew = updated_highlight.length;
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// find the identical caracters at the beginning
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for( i=0; i < lengthOld && i < lengthNew && replacedBloc.charAt(i) == updated_highlight.charAt(i) ; i++ )
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{
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}
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nbStart = i;
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// find the identical caracters at the end
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for( i=0; i + nbStart < lengthOld && i + nbStart < lengthNew && replacedBloc.charAt(lengthOld-i-1) == updated_highlight.charAt(lengthNew-i-1) ; i++ )
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{
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}
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nbEnd = i;
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// get the changes
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lastHtml = replacedBloc.substring( nbStart, lengthOld - nbEnd );
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newHtml = updated_highlight.substring( nbStart, lengthNew - nbEnd );
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// We can do the optimisation only if we havn't touch to span elements
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if( newHtml.indexOf('<span') == -1 && newHtml.indexOf('</span') == -1
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&& lastHtml.indexOf('<span') == -1 && lastHtml.indexOf('</span') == -1 )
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{
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var beginStr, nbOpendedSpan, nbClosedSpan, nbUnchangedChars, span, textNode;
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doHtmlOpti = true;
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beginStr = t.last_hightlighted_text.substr( 0, stay_begin.length + nbStart );
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nbOpendedSpan = beginStr.split('<span').length - 1;
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nbClosedSpan = beginStr.split('</span').length - 1;
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// retrieve the previously opened span (Add 1 for the first level span?)
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span = t.content_highlight.getElementsByTagName('span')[ nbOpendedSpan ];
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//--------[
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// get the textNode to update
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// if we're inside a span, we'll take the one that is opened (can be a parent of the current span)
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parentSpan = span;
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maxStartOffset = maxEndOffset = 0;
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// it will be in the child of the root node
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if( nbOpendedSpan == nbClosedSpan )
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{
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while( parentSpan.parentNode != t.content_highlight && parentSpan.parentNode.tagName != 'PRE' )
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{
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parentSpan = parentSpan.parentNode;
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}
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}
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// get the last opened span
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else
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{
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maxStartOffset = maxEndOffset = beginStr.length + 1;
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// move to parent node for each closed span found after the lastest open span
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nbClosed = beginStr.substr( Math.max( 0, beginStr.lastIndexOf( '<span', maxStartOffset - 1 ) ) ).split('</span').length - 1;
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while( nbClosed > 0 )
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{
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nbClosed--;
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parentSpan = parentSpan.parentNode;
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}
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// find the position of the last opended tag
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while( parentSpan.parentNode != t.content_highlight && parentSpan.parentNode.tagName != 'PRE' && ( tmpMaxStartOffset = Math.max( 0, beginStr.lastIndexOf( '<span', maxStartOffset - 1 ) ) ) < ( tmpMaxEndOffset = Math.max( 0, beginStr.lastIndexOf( '</span', maxEndOffset - 1 ) ) ) )
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{
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maxStartOffset = tmpMaxStartOffset;
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maxEndOffset = tmpMaxEndOffset;
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}
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}
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// Note: maxEndOffset is no more used but maxStartOffset will be used
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if( parentSpan.parentNode == t.content_highlight || parentSpan.parentNode.tagName == 'PRE' )
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{
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maxStartOffset = Math.max( 0, beginStr.indexOf( '<span' ) );
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}
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// find the matching text node (this will be one that will be at the end of the beginStr
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if( maxStartOffset == beginStr.length )
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{
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nbSubSpanBefore = 0;
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}
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else
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{
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lastEndPos = Math.max( 0, beginStr.lastIndexOf( '>', maxStartOffset ) );
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// count the number of sub spans
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nbSubSpanBefore = beginStr.substr( lastEndPos ).split('<span').length-1;
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}
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// there is no sub-span before
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if( nbSubSpanBefore == 0 )
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{
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textNode = parentSpan.firstChild;
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}
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// we need to find where is the text node modified
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else
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{
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// take the last direct child (no sub-child)
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lastSubSpan = parentSpan.getElementsByTagName('span')[ nbSubSpanBefore - 1 ];
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while( lastSubSpan.parentNode != parentSpan )
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{
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lastSubSpan = lastSubSpan.parentNode;
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}
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// associate to next text node following the last sub span
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if( lastSubSpan.nextSibling == null || lastSubSpan.nextSibling.nodeType != 3 )
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{
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textNode = document.createTextNode('');
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lastSubSpan.parentNode.insertBefore( textNode, lastSubSpan.nextSibling );
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}
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else
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{
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textNode = lastSubSpan.nextSibling;
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}
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}
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//--------]
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//--------[
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// update the textNode content
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// number of caracters after the last opened of closed span
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nbUnchangedChars = beginStr.length - Math.max( 0, beginStr.lastIndexOf( '>' ) + 1 );
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// console.log( span, textNode, nbOpendedSpan,nbClosedSpan, span.nextSibling, textNode.length, nbUnchangedChars, lastHtml, lastHtml.length, newHtml, newHtml.length );
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// alert( textNode.parentNode.className +'-'+ textNode.parentNode.tagName+"\n"+ textNode.data +"\n"+ nbUnchangedChars +"\n"+ lastHtml.length +"\n"+ newHtml +"\n"+ newHtml.length );
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// IE only manage \r for cariage return in textNode and not \n or \r\n
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if( t.isIE )
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{
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nbUnchangedChars -= ( beginStr.substr( beginStr.length - nbUnchangedChars ).split("\n").length - 1 );
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//alert( textNode.data.replace(/\r/g, '_r').replace(/\n/g, '_n'));
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textNode.replaceData( nbUnchangedChars, lastHtml.replace(/\n/g, '').length, newHtml.replace(/\n/g, '') );
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}
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else
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{
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textNode.replaceData( nbUnchangedChars, lastHtml.length, newHtml );
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}
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//--------]
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}
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}
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// an exception shouldn't occured but if replaceData failed at least it won't break everything
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catch( e )
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{
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// throw e;
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// console.log( e );
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doHtmlOpti = false;
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}
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}
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/*** END HTML update's optimisation ***/
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// end test
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// console.log( (TPS6-TPS5), (TPS5-TPS4), (TPS4-TPS3), (TPS3-TPS2), (TPS2-TPS1), _CPT );
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// get the new highlight content
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tpsAfterOpti2 = new Date().getTime();
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hightlighted_text = stay_begin + updated_highlight + stay_end;
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if( !doHtmlOpti )
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{
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// update the content of the highlight div by first updating a clone node (as there is no display in the same time for t node it's quite faster (5*))
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var new_Obj= t.content_highlight.cloneNode(false);
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if( ( t.isIE && t.isIE < 8 ) || ( t.isOpera && t.isOpera < 9.6 ) )
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new_Obj.innerHTML= "<pre><span class='"+ t.settings["syntax"] +"'>" + hightlighted_text + "</span></pre>";
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else
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new_Obj.innerHTML= "<span class='"+ t.settings["syntax"] +"'>"+ hightlighted_text +"</span>";
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t.content_highlight.parentNode.replaceChild(new_Obj, t.content_highlight);
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t.content_highlight= new_Obj;
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}
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t.last_text_to_highlight= infos["full_text"];
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t.last_hightlighted_text= hightlighted_text;
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tps3=new Date().getTime();
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if(t.settings["debug"]){
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//lineNumber=tab_text.length;
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//t.debug.value+=" \nNB char: "+_$("src").value.length+" Nb line: "+ lineNumber;
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t.debug.value= "Tps optimisation "+(tps_end_opti-tps_start)
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+" | tps reg exp: "+ (tpsAfterReg-tps_end_opti)
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+" | tps opti HTML : "+ (tpsAfterOpti2-tpsAfterReg) + ' '+ ( doHtmlOpti ? 'yes' : 'no' )
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+" | tps update highlight content: "+ (tps3-tpsAfterOpti2)
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+" | tpsTotal: "+ (tps3-tps_start)
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+ "("+tps3+")\n"+ debug_opti;
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// t.debug.value+= "highlight\n"+hightlighted_text;*/
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}
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};
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EditArea.prototype.resync_highlight= function(reload_now){
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this.reload_highlight=true;
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this.last_text_to_highlight="";
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this.focus();
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if(reload_now)
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this.check_line_selection(false);
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};
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